WERNER, I. Graphic method of proportioning sands. Materiales de Construcción, [S. l.], v. 6, n. 073, p. 34–37, 1956. DOI: 10.3989/mc.1956.v06.i073.2420. Disponível em: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2420. Acesso em: 4 may. 2024.